import java.util.Scanner;

public class Main1601 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = x * 3;
        int z = y - 8;
        double a = (x + y + z) / 3.0;
        System.out.println(y);
        System.out.println(z);
        System.out.println(String.format("%.1f", a));


    }
}
